Fungicide.



upon solution in water.

time a longer adherence metals are re-dissolved There may also be. employed .fying or solvent medium castor Oll soap and therefore does sA'rEs JULIUS STOCKHAUSEN, OF CREFELD, GERMANY.

FUNGICIDE.

No Drawing.

T 0 all whom it may concern: v

Be it known that I, JULIUS STOCKl-IAISEN, a subject of the German Emperor, residing atCrefeld, Germany, have invented a new and useful Fungieide; and I do hereby declare. the following to be a full, clear, and exact description ,of the same.

The known emulsions or solutions of organic chlorids, mineral oils and the like with emulsifying or solvent means such as soap or turkey-red oil, are not directly applicable for the combating of vegetable blights or pest-s, because they may easily destroy or injure the tender shoots and buds of the plants treated therewith especially when applied in large quantities.

The present invention is based upon the observation that the harmful effects arise from'the dissociation and alkali-liberation of the emulsifying or solvent means upon their solution in Water and these harmful effects may be obviated if this dissociation be rendered impossible by employing as emulsifying or solvent means such fatty and sulfonated fatty acid compounds as do not liberate free alkali through dissociation In the simplest case this is effected by using as the emulsifying or solvent means fatty or sulfonated fatty acid compounds of the heavy metals, especially of coppe., whereby at the same of the liquid to the treated plants and other objects is obtained. Moreover, a more advantageous and effective medium is produced if the fatty or sulfonated fatty acid compounds of the heavy by treatment with ammonia or the like. Furthermore there may be used fatty or sulfonated fatty acid compounds which are neutralized With ammonia instead of with causticalkali, with or without the addition of copper-compounds.

as the emulsireferably neutral which does not dissociate not injure the shoots and buds. The soaps of other oxyacidsact in the same way.

, For the production of the new emulsions or solutions even simple mixtures of organic chloride and thelike with non-aqueous liquids of low specific gravity, 6. g. petroleum, can be employed without the addition of alkali-liberating soaps; this also presents the advantage that the mixing liquid is of approximately the same density as Water and Specification of Letters Patent. Patent-ed Jan, 17, 1911, Application filed March 31, 1910. Serial No. 552,724.

therefore, because of the closely correspondnnn'rorricn.

ing specific gravity, emulsifies with the subor calcium compounds and in a degree. sufficient in practice for the present object.

The carrying out of the process may be effected for example as follows: Carbon tetrachlorid is emulsified or brought into solu tion in the known manner by means of an aqueous solution of the soap produced by the treatment of sulfonated castor oil or analogous sulfonated fats, oils, fatty acids and oily acids with excess of an alkali, for example, potash, soda or ammonia at comparatively high temperature. The preferred proportions of the ingredients are as follows :26.5 kg. of the soap described in United States Patents 585347 and 646326 are dissolved in 26.5 kg. water and mixed with 18 kg. carbon tetrachlorid. Hereto there is added 3 kg. copper sulfate dissolved in 19.5 ofwater until a thick paste or pulp is obtained which is dissolved by 6.5 kg. concentrated ammonia liquid. The temperature of mixing is not material. The solution obtained is then treated with copper sulfate until there is no further precipitation, that is until the whole ofthe fatty acid compound has been changed to a salt of copper. Ammonia is added until the previously separated precipitate is re-dissolved.

Thedisinfectant obtained in this way is very effective even when largely diluted with Water, because it penetrates very thoroughly into the,materia1 to be treated; the

hydrocarbonchlorid is also retained very firmly in the solution anddoes not evaporate so quickly even after the evolution of the ammonia, so that it can exert its deadly effeet after a longer time and'in consequence of its slower evaporation the disinfectant is less dangerous for the user than other sub-.

stances of a similar nature and function.

Instead of carbon tetrachlorid, tetrachlorethane, pentachlorethane, trichlorethylene,

erchlorethylene or the like can be used.

What I claim and desire to secure by Letters Patent is,-

1. A composition of matter, comprising carbon tetrachlorid and soap of copper.

2. A composition of matter, comprising carbontetrachlorid and a sulfonated fatty acid compound of copper.

A process for the production of a disinfectant, comprising treating carbon tetrasequently added aqueous solution of copper chlorid with aqueous soap solution and a copper salt. 4. A process for the production of a dls- 'infectant, comprising treating carbon tetrachllorid with turkey-red oil and a copper sa t. r

5. A process for the production of a disinfectant, comprising treating sulfonated castor oil with excess of alkali and adding thereto carbon tetrachlorid and a copper salt.

6. A process for the production of a disinfeotant, comprising treating carbon tetrachlorid with aqueous soap solution, a copper salt and ammonia.

7. A process for the production of a disinfectant, comprising treating sulfonated castor oil with excess of alkali and'adding carbon tetrachlorid, a copper salt and ammoma.

8. A process for the production of a disinfeotant comprising treating sulfonated castor oil with excess of alkali at a high temperature and adding carbon tetrachlorid, a copper salt and ammonia.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

JULIUS STOCKHAUSEN. Witnesses:

HENRY GUADFLIEG, ELISE KALBURsH. 

